Quick and Simple Script to De-Flutter an iOS/Android Mobile Application

flutter-disabler.sh

#!/bin/sh

# Default values
input_apk=""
signer_path=""

# Function to display help message
print_help() {
    echo "Usage: $0 -i <input_apk> [-s <signer_path>]"
    echo ""
    echo "Options:"
    echo "  -i    Path to the input APK file"
    echo "  -s    Path to the uber-apksigner jar file (optional)"
    echo ""
    echo "Example:"
    echo "$0 -i path/to/app.apk"
    echo "$0 -i path/to/app.apk -s path/to/uber-apksigner.jar"
}

# Parsing command line flags
while getopts "i:s:h" flag; do
    case "${flag}" in
        i) input_apk="${OPTARG}" ;;
        s) signer_path="${OPTARG}" ;;
        h) print_help; exit 0 ;;
        *) print_help; exit 1 ;;
    esac
done

# Check if the input APK file is provided and valid
if [ ! -f "$input_apk" ]; then
    echo "Error: Input APK file is required and must be a valid file."
    print_help
    exit 1
fi

sudo apt-get update
pip3 install reflutter

reflutter "$input_apk"

java -jar "$signer_path" --apk "release.RE.apk"

exit 1
if [ -n "$signer_path" ] && [ -f "$signer_path" ]; then
    # Use uber-apksigner
    java -jar "$signer_path" --apk "release.RE.apk"
else
    # Use zipalign, keytool, and apksigner
    zipalign -p -v 4 release.RE.apk release.ALIGN.apk

    # the following command generates the keystore and it will ask a password for the same, please remember/store it somewhere
    keytool -genkey -v -keystore my.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias app -storepass 'Passw0rd!'

    # It will ask for the keystore password that you gave in the earlier command
    apksigner sign --ks-key-alias app --ks my.keystore --ks-pass pass:'Passw0rd!' --out release.SIGN.apk release.ALIGN.apk 

    apksigner verify --print-certs --verbose release.SIGN.apk
fi